Continuous wave operation of quantum cascade lasers with frequency-shifted feedback
Source abstract
Abstract
Operation of continuous wave quantum cascade lasers with a frequency-shifted feedback provided by an acousto-optic modulator is reported. Measured linewidth of 1.7 cm−1 for these devices, under CW operating conditions, was in a good agreement with predictions of a model based on frequency-shifted feedback seeded by spontaneous emission. Linewidth broadening was observed for short sweep times, consistent with sound wave grating period variation across the illuminated area on the acousto-optic modulator. Standoff detection capability of the AOM-based QCL setup was demonstrated for several solid materials.
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Research context
OpenAlex topics: Spectroscopy and Laser Applications · Semiconductor Lasers and Optical Devices · Laser Design and Applications
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Affiliations
Pranalytica, Inc. 1 , 1101 Colorado Ave., Santa Monica, CA 90401, USA
University of Central Florida 2 NanoScience Technology Center, , 12424 Research Pkwy, Orlando, FL 32826, USA
University of Central Florida 3 College of Optics and Photonics, , 304 Scorpius St, Orlando, FL 32826, USA
Funding
Army Research Office
References (9)
Show source-provided references
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